Fe、Si质量比对Al-Mn合金中第二相的影响

龙元宁; 涂益友; 蒋建清

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Fe、Si质量比对Al-Mn合金中第二相的影响
Influence of Fe/Si Ratio and Cooling Rate on Secondary Phase in Microstructure of Al-Mn Wrought Aluminum Alloy
2009年29卷第7期页码：663-665
纸质出版日期： 2009 ，
DOI：

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[1]龙元宁,涂益友,蒋建清.Fe、Si质量比对Al-Mn合金中第二相的影响[J].特种铸造及有色合金,2009,29(07):663-665+587.

Long Yuanning, Tu Yiyou, Jiang Jianqing. Influence of Fe/Si Ratio and Cooling Rate on Secondary Phase in Microstructure of Al-Mn Wrought Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(7):663-665.
[1]龙元宁,涂益友,蒋建清.Fe、Si质量比对Al-Mn合金中第二相的影响[J].特种铸造及有色合金,2009,29(07):663-665+587. DOI：

Long Yuanning, Tu Yiyou, Jiang Jianqing. Influence of Fe/Si Ratio and Cooling Rate on Secondary Phase in Microstructure of Al-Mn Wrought Aluminum Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(7):663-665. DOI：

摘要

采用金相显微镜、扫描电镜和XRD等手段

分析了Fe、Si质量比和冷却速度对Al-Mn系变形铝合金中第二相形貌及类型的影响。结果显示

Fe、Si质量比<2.5时

合金中的第二相化合物为骨骼状α-Al12（Fe

Mn）3Si相

Fe、Si质量比>2.5时开始形成针状β-Al85（Mn

Fe）14Si相化合物。而冷却速度增大时

促进形成骨骼状的α-Al12（Fe

Mn）3Si相。

Abstract

Effects of Fe/Si ratio and cooling rate on morphologies and types of secondary phase in microstructure of Al-Mn wrought aluminum alloy were investigated by OM （optical microscope） and SEM （scanning electron microscope） and XRD （X-ray diffraction）. The results reveal that with Fe/Si ratio lower than 2.5

skeleton α-Al12（Fe

Mn）3Si phase can be observed in the alloy

while Fe/Si ratio more than 2.5

acicular β-Al85（Mn

Fe）14Si phase can be found in the alloy. In addition

generation of skeleton α-Al12（Fe

Mn）3Si phase can be promoted with increasing in cooling rate.